Ventilating sash lock



Jan. 10, 1939. G. A. KLEB VENTILATING SAsH LOCK Filed Oct. l5, 1937 lPatented Jan. 10, 1939 UNITED STATES VENTILATING SASH LOCK `George A. Kleb, St. Louis, Mo. Application October 15, 1937, Serial No. 169,088

8 Claims.

This invention relates to cert-ain new and useful improvements in Ventilating sash locks, the peculiarities of which will be hereinafter fully described and claimed.

The main objects of my invention are to provide means rst, for automatically locking sliding window sashes in their extreme safe opening positions relative to burglarious entrance, without its being necessary to set the lock by hand; second, to provide a lock that will require no attention, is always Acapable of selfoperation by adjusting one sash relative to the other in affording the largest safe Ventilating opening; third, toallow dividing the Ventilating opening soas to provide openings above and below the sashes without aiecting the :potentiallocking effect for said largest Ventilating opening; fourth, to allow full opening of the window without requiring resetting of the lock for Ventilating purpose;` and fifth, to furnish a strong relatively cheapconstruction that is readilyl applied to any suitable sliding window sash toguard the opening for Ventilation.

In the accompanying drawing in which like reference numerals indicate corresponding parts, Fig. 1 represents an inside elevation of the stiles on one side of a window in closed position, with my lock applied thereto; Fig. 2, an edge View of the same with my platehook in section; Y

Fig. 3, a similar View with the sashes locked in extreme Ventilating position;

Fig. 4, a rear view of my plate-bar guide showing the spring holder land spring;

Fig. 5, an enlarged detail View of the spring and its holder, and

Fig. 6, a detailed View showing the back of the plate-hook.

In the prior art, Various devices have been used for locking Ventilating sashes but those that I am aware of require personal attention and manipulation to set them in operative position.

My device requires no such attention, but is always on guard and potentially effective in locking the upper and lower sash in Ventilating position so as to provide a safe opening against burglarious entrance. Such Ventilating opening is sufficient to prevent the entrance of a burglar while the locking device maintains the sashes so they will not provide a larger opening. Furthermore the construction of such a locking device requires that its parts be strong enough to resist ordinary efforts to enlarge the Ventilating opening, and by practical experience I have found that my construction as hereinafter described, is

very eicent in regard to its strength, operation,

and requirement of no attention on the part of the householder to set it for its operative position. The plate construction of the hook and its plate-bar guide in which it is slidingly andpivotally mounted, has been thoroughly tested to my complete satisfaction.

Referring to the drawing the numerals I and 2 refer respectively to the stiles of the upper and lower sashes and I and 2' designate the meeting rails of said sashes. On a stile of the upper sash is mounted my plate-bar guide, consisting of a plate-bar strip 3 supported away from the stile by its shouldered ends so as to form a space 4,

Fig. 2, to serve as a guide slot for a plate-hook mounted therein.

This plate-hook consists of flat plate body 5 provided at one end with a projection on the back forming a right angled hook 6. The upper end of said body consists of a crossbar 1 adapted to t loosely in said slot 4 so as to slide up and down thereon, and pivot on said crossbar in reversing from the position shown in Fig. 2 to that shown in Fig. 3. Adjacent to the pivotal crossbar is an opening 8, Fig. 6, preferably rectangular, adapted to match the lower end of said plate-bar guide and pass a lower shoulder 9 of said guide so that said plate-hook can be disposed in the dotted position, Fig. 2, and in practically the same vertical plane as the outer face of the guide. Below said shoulder 9 the end I0 of said guide is held iirmly to the stile by a screw I I. The upper end of said guide has an inward shoulder I2 at the upper end of said space 4 and forming a stop which is engaged by the crossbar 1 of the plate-hook when in its reversed upper position as shown in Fig. 3.

Adjacent to the lower shoulder 9 is a crosspiece I3 of channel shape or other suitable flanged shape, practically filling the slot space 4 at the lower end and having a nat spring I4 secured between the flanges by a bolt I5 passing through the lower end of the bar guide and the spring and its holder secured thereon by the nut on said bolt I5. The said spring extends beyond the sides of the plate-bar guide as shown in Fig. 4, and is engaged by the portions I6 of the plate-hook when the latter is in its lower position in the slot 4 as sho-wn in Fig. 2. The spring, being spaced away from the stile, is pressed inward when the plate hook assumes its dotted position, Fig. 2, under pressure of the finger to bring the said hook flush with the outer face of the bar-guide as before stated. In this position the lower sash can be raised without interfering with the plate-hook when it is desired to open the window more than the Ventilating distance.

In locking the sashes when opened to ventilating distance of the extreme opening before mentioned,'the lower sash is raised so that a heavy plate I1 on the top of its meeting rail, engages the hook end disposed as in Fig. 2. The spring inclines the hook as shown, so that such engagement will cause the hook end to slide on the plate I'I when they meet, and continued upward movement of the lower sash will carry upward said plate hook by means of its sliding engagement with the plate guide, and will reverse the hook on its pivotal crossbar 'I till it is upside down when the crossbar meets the upper shoulder I2. When in this position with the hook end engaging the top of the plate I'l and the crossbar 'I engaging the upper shoulder I2 of the guide, a positive locking eiect preventing further upward movement of the lower sash, is obtained.

The upper end of the guiding strip is depressed so that it is thinner than the balance of the strip, in order that the hook in its reversed position as shown in Fig. 3, shall have a firm support at its back and eiectively resist any endeavor to raise the sash higher than the Ventilating distance. The upper end above the shoulder I2 also has its Side edges and top bent down to form a supporting flange I8 against the face of the stile. Such depression is preferably formed by inwardly inclined faces I9, the upper face forming the firm support for the hook end as shown in Fig. 3, and the lower face inclined so that the body of said hook will rest against said face While the bar end is stopped from further rising by the said shoulder I2. The screw II holds the upper end firmly against the stile.

While I have described the operation of this lock by raising the lower sash, it is evident that the same operation of the parts of my lock will take place when the upper sash is lowered and the hook is caused to meet and slide on the plate I'I on the meeting rail of the lower sash, and then assume its position against the upper shoulder I2 by further lowering of the upper sash, whereupon the reversed hook will vengage the said plate I 'I and prevent further lowering of the upper sash.

Also it will be noted that the Ventilating space afforded by the sashes when locked from further movement as in Fig. 3, may be divided so that a part of it is at the top of the window frame and the balance is at the bottom of the frame above the window sill 2|).

The usual or any suitable lock for the middle of the meeting rails to hold them from any separation, may be employed in connection with my Ventilating lock and without affecting my lock.

The plate-bar and plate-hook construction is preferred on account of the strength and stiffness provided, but I do not limit myself to the exact construction shown except by the appended claims.

I claim:

1. A"ventilating sash lock comprising a platebar strip vertically disposed and spaced from the inner face of a stile of an upper sash by upper and lower shoulders defining a guiding sot, and a plate-hook body having a right angle projection forming a rear hook at one end and characterized by a rectangular opening in the body adjacent the other end forming a crossbar at said other end which is slidingly and pivotally maintained in said guiding slot, and means to incline said plate-hook outward into the path of the meeting rail of the lower sash so as to be engaged thereby and automatically reversed to dispose the hook end outward to engage and limit the upward movement of the lower sash when said crossbar engages said upper shoulder, substantially as described.

2. A Ventilating sash lock as in claim l, said means to incline the hook consisting of a spring near the lower shoulder of said guide engaging said plate-hook when disposed near the bottom of the guiding slot, substantially as described.

3. A Ventilating sash lock, comprising a platebar strip having inward shoulders defining a guiding slot for mounting on one window sash, and a plate-hook consisting of a body having a hook at one end adapted to engage the other sash and an opening adjacent the other end of said body forming a crossbar for pivotal and sliding mounting in said slot, substantially as described.

4. A Ventilating sash lock comprising a platebar strip having upper and lower end shoulders secured to a stile forming a guide slot, and a plate-hook consisting of a body having a hook at one end and a rectangular opening adjacent the other end forming a horizontal crossbar at said other end pivotally and slidingly mounted in said slot, a support for said plate-hook normally inclining it outward near the lower shoulder, said body opening being large enough to allow of passing below said lower shoulder when manually pressed inward, substantially as described.

5. A Ventilating sash lock comprising a platebar strip having shouldered ends fastened to a stile and spacing the strip from the stile to form a guiding-slot, a plate-hook consisting of a body having a rectangular opening adjacent one end forming a horizontal crossbar at the top connected by side portions with the body and slidingly embracing said plate-bar strip, a` horizontal flanged crosspiece at the bottom end of the guiding slot, a horizontal flat spring held by the anged crosspiece and extending beyond said strip to engage said side portions and incline said hook outward when the crossbar rests on said flanged crosspiece, and means to secure the flanged crosspiece and spring to the said strip, substantially as described.

6. A Ventilating sash lock comprising a flat bar strip having a lower end shoulder fastened to a stile forming a guiding slot, a plate-bar hook having a rectangular opening adjacent one end forming a horizontal crossbar mounted in said slot, and means to support the crossbar horizontally and incline the plate-hook outward characterized by a horizontal channel crosspiece and a spring embraced by the flanges and extending beyond the plate-bar strip to engage and incline the plate-hook, and a bolt securing the channel crosspiece and spring and platebar strip together, substantially as described.

7. A Ventilating sash lock having, in combination a strip having end shoulders secured to a sash stile to space the strip away from the stile. and a hook having one end slidingly and pivotally mounted behind said strip and an inward hook at the other end, characterized by automatically sliding upward in contact with the meeting rail of the sash till stopped by the upper shoulder, and thereby automatically reversing the hook from inward to outward projection for locking said meeting rail from further opening, substantially as described.

8. A Ventilating sash lock having, in combination a vertically disposed plate-bar guiding strip having inward shoulders at each end fastened to a sash stile forming a guiding slot therewith, and a hook having at one end a right angled projection from one face forming a hook end and a crossbar at the other end slidingly and pivotally mounted in said slot, said guiding strip being characterized by an extension beyond its upper shoulder having inclined faces meeting to form a depression, and turned-in edges that are firmly pressed against the stile by a fastening screw forming a rm support behind the hook end when the latter is in its reversed upper p0- sition, substantially as described.

GEORGE A. KLEB 

